Welcome to mcg to mg, our article which explains how to convert micrograms to milligrams. If you have come to our website in search for μg to mg, or if you have been wondering about how many milligrams in a microgram, then you are right here as well. According to the International System of Units, the correct unit symbol for micrograms is μg, however the abbreviation mcg is prevalent in the Unites States. The unit symbol for milligram is mg, universally. Read on to learn everything about mcg in mg, and make sure to check out our mcg to mg converter.

Convert MCG to MG

A microgram is 1/1000 of milligram. Thus, the mcg to mg formula is [mg] = [mcg] / 1000. For example, if you have 3 micrograms, then this mass is equivalent to 0.003 milligrams.

To convert micrograms to milligrams divide the mass in micrograms by 1000. Sticking with our example, 3 micrograms / 1000 = 3 / 1000 milligram = 0.003 mg.

The easiest way to change micrograms to mg is using our converter below. Enter the mass in mcg, utilizing a decimal point for fractions. Our tool then does the conversion automatically.

MCG to MG Converter

Change mcg to mg


If you press the blue button, then our ug to mg conversion calculator changes to converting mg to mcg. Frequent microgram to milligram conversions on our site include, but are not limited, to:

Here you can find everything about mg to mcg. In the next section of this article you can find more information about micrograms to milligrams; in particular we explain μg to mg and ug to mg.

Micrograms to Milligrams

Here we give you additional infos on micrograms to milligrams, which is spelled as microgrammes to milligrammes in many countries except for the Unites States, for example.

Using the official (SI) unit symbols, mcg to mg is written as μg to mg; μ denoting a factor of 10−6 (one millionth) is the lowercase Greek letter Mu for “micro”.

In turn, the lowercase “m” in mg stands for “milli”, the metric prefix denoting a factor of 10−3. Therefore, one mcg is one millionth of a gram, and one mg is one thousand of a gram.

However, when people can’t find the letter μ on their keyboard, they often enter ug to mg in the search engine of their preference because the “u” resembles the “μ”.

More search terms visitors are often looking for include, for instance, what is mcg?, microgram to mg, mcg vs mg, mcg means? and mg per mcg, just to name a few.

In the final paragraph ahead we talk about the FAQs in the context, and then tell you how to use our custom search form to locate mass conversions before we sum our article up.


You already know most about mcg in mg, but we would also like to bring the frequently asked question on microgram to mg to your attention:

  • How many milligrams in a microgram?
  • How many mg in mcg?
  • How much is a microgram?
  • How many mg in a ug?
  • How many mcg in a milligram?
  • How many mcg make a mg?
  • How many micrograms make a milligram?

Taking into account our information, you can certainly answer what does mcg mean? and these FAQs. Yet, you may ask us anything else pertinent to mcg in mg by filling in the comment form.

Another possibly is sending us an email with the subject line convert mcg to mg; we appreciate any feedback and will respond asap. Now, check out our mcg to mg conversion search form.

Using that form, located in the sidebar or at the bottom, you can find many microgram to milligram conversions by inserting, for example, x micrograms to mg, x denoting you mass in mcg.

Try it out now, entering for instance, x mcg mg, x microgram in milligram, or x mcg to ug. Our result page contains all post relevant to x mcg to mg. In conclusion:

mcg to mg

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